Hose coupling



J. R. FARR Ho'sE CUPLING April 5, 1932.

Filed Sept. 29, 1931 2 Sheets-Sheet 2 IO IIIIIIIIIIIIIIIIHUIHHIIIIII osurrounding'and binding the hose tothe couthe nipple ofthe hosecoupling. The nipple `55` V the pressure in the hose arises abovenormal., an outer lannular lla-nge 5. The `rshoulders 4 C0 i plinggwhichshall#` embody a clamp which ofthe" latter.

i also .embody a: clamp Asurrounding the hose Yand is provided in itsinner surface With'ann .l 2.5 Withthe foregoing `and otherobjects in'moved longitudinallyk thereon in the direc! scribed and claimechfandillustrated in the ac- 'bedded in the hose and portions of the hose0Patented Apr. 5,' 1932 l y 1,852,9621

f unirse SLT ATE-s@ rail? ENT OFFICE JAMESy It.' FARB, OF LOS ANGELES,CALIFORNIA HosE'fcoUrLIivG Application filed September 29v 1.931.,ktSerial No. 565,867.

Thisinventi'on relates to hose couplings of Figure 6 is a sectional viewtakenv onthe that type embodyinga nipple having a por-yyplaneindicatedby the line 6-6 of Figure 5.* tion thereof located in thekhose andhaving 7 Referring indetail'to the drawings, 1 desgits outerend.y .screw threaded, and a clamp nates` a fragmentary-portion of ahose, and 2V ypling;` Couplings of this type are objection- 2 has thegreater portion Vthereof located in able dueto the fact that a leakdevelops bel the hose 1, and is provided at its outer end ytween thenipple and the hose or the hose with screw threads The nipple 2 is profbreaks at the'inner endkof the nipplewhen vided lwith outery annularshoulders l and 'Ehe present invention khas Vfor onev of its arerelatively spaced, and are located on that objects to overcomel thestated and other obportion ofy thegnipple- 2 located Within thejecti'onsto'these hose couplingsgand to attain hose 1. The flange 5 is`located outwardly this end oomprehends the provision of a couof the hose1 and contacts With-the outer end shallbeadapted to so firmly bind thehose A segmental wedge sleeve 6 having aninon theenipple' as topositively prevent abnornercylindrical surface and a` tapered outer cyina-ll'yhigli pressuresfrom forcing liquid be-v vsurface, emb-racesthegreater part of that portween the nipple and -hose and which shall tionof the hose 1 surrounding the nipple 2,`

at and adjacent tothe inner. end portion of nula-r grooves 7 registeringwith the shoul- "the'nipp'leand functioningjto prevent abno-rdei-s4. Aone-pieceI sleeve 8 of conical formal mally high `pressures frombreaking the hose tion, surrounds the `wedge sleeve 6, andfis attheinner end of the nipple. v adapted to contract the wedge sleeve when.

Yviewythe nature ofY which willA appear as tion of they outer endthereof. The contracthe descriptionproceeds, the.y invention cont-ion ofthe wedge sleeve Gforces the hose l sistsintheconstruction, combinationand arlinthe directionof the nipple 2 with thererangementof partshereinafter fully desult that the nipple shoulders will be eine.

companyingdrawings,wherein:- forced into the Wedger sleevegroove l'TandFigure 1 .'s aA view inside elevation of a with the result that allportions ofthat'part hose coupling constructed in accordance with of thehose surrounding the nipple will'` be my invention, the couplingbeingshown in held in firm contact therewith. Y'

:applied position on a hose. Adislr `9 is mounted upon the nipple 2 out!g5 40 enlargedscale talenon the plane indicated by nipple flange 5.Thedisk 9 extends radially` p V]:l`igure 5 is an elevational View of afrag- SCI'-W hFQLClCUY G of the clamps are connected together, and 15,tothe end that thesl'eeve Smaybe'moved" yFigurel 2is a longitudinalsectionalview wardly of the hose 1, and the opening 10 onan enlargedscale taken on the, plane i'ndi-l formed in the disk for the receptionof the rcated;byfthelinef2-42 of' Figure 1. nipple. is counter bored atits inner sidje to lli;y "ure 31s atransverse sectional view onanprovide a. recess 11 for the reception of thebeyond the contractingsleeve 8, and ispro.

theline 3"-3 of `Figure 1.

Eigure eis, a transverse sectional view 'on vided near its peripherywith 'openings `12 anlenlargedfscaletaken onthe plane indicated for thereception fof bolts 13 which pass by the line 4-4 of Figure 1.' throughopenings 14: formed inL a ringgl;

engaged, Vas at-l, withthe ment-ary portion of the clamp for preventingouter end portion of the contractingfsleeve. the breaking of the hose atthek inner end of The heads of the bolts 13 contact with the the nipple,this vieuT illustrating the conouterside of the disk 9, and the lnutsofthe i struction of the hinges by which the sectionsbolts'contactwiththeinner side ofthe ringL in a direction to contractthe Wedge sleeve 6 and to the end that the contracting sleeve may beheld against accidental movement from its adjusted position.

The wedge sleeve 6 extends from the outer end of the hose 1 to a pointshort of the inner end of the nipple 2, and a cylindrical clamp 17surrounding the hose extends from the inner end of the wedge sleeve to apoint inwardly beyond the inner end of the nipple 2. The clamp consistsof three arcuate sect-ions hinged together at their longitudinal edges,and two of the sections are longer than the remaining section, to theend that the clamp may be readily applied to the hose l. The shorterclamp section is designated 17a, and the longer clamp sections aredesignated 175 and 170, respectively. The hinges 18 through the mediumof which the clamp sections are connected together, are similar and eachconsists of a pair of spaced lugs 19, alug 20 arranged between saidfirst lugs, and a pin 21 passing through the lugs, the lugs 19 beingyformed integrally with the sections 17?) and 170, and the lugs 20 beingformed integrally with the section 17a. Tongues 22 extend across themeeting edges of the sections of the clamp 17, the tongues being formedintegrally with certain of the sections and fitting in recesses 23formed in the others, and the tongues functioning to prevent thepinching of the hose 1 between the meeting edges of the sections duringthe application of the clamp. The sections 17 Z) and 17 c are providedat their meeting edges with outwardly directed flanges 2li for thereception of bolts 25 by which the clamp sections are secured in closedrelation about the hose l. The clamp 17 is held against inwarddisplacement on the hose 1 by bolts 26 which pass through lugs 27extending radially from Athe contracting sleeve 8 and lugs 28 extendingradially from the clamp sections.

In practice, the coupling is applied by first inserting the nipple 2 inthe hose until the flange 5 of the nipple contacts with the end of thehose. The contracting sleeve 8 is then applied to the hose in a positionto permit the Wedge sleeve sections 6a to be positioned between the hoseand contracting sleeve. After this has been done the disk 9 is appliedto the nipple 2 in position to Contact with the flange 5, the end of thehose and the outer ends of the wedge sleeve sections Ga. The bolts 13are then applied to the disk 9 and ring 15, and the nut-s of the boltsare turned up to move the contracting sleeve 8 on the wedge ringsections 6a in the direction of the disk 9. During this adjustment ofthe contracting sleeve 8 the wedge ring sections Ga are held againstendwise movement, with the result that the wedge ring sections will becontracted about the hose, the contraction of the Wedge ring sections solirmly clamping the hose on the nipple 2 as to positively prevent liquidfrom being forced between the nipple and the hose. The clamp 17 is thenapplied to the hose and secured to the contracting sleeve 8 by the bolts26. The clamp 17 will, since it surrounds the hose about the inner endportion of the nipple 2 and for a distance inwardly beyond the inner endof the nipple, positively prevent the hose from breaking at the innerend of the nipple.

Vhile I have described the principle of the invention, together with thestructure which I now consider the preferred embodiment thereof, it isto be understood that the structure shown is merely illustrative andthat such changes may be made, when desired, as fall within the scope ofthe invention as claimed.

IVhat is claimed is 1. A hose clamp comprising a nipple, a segmentalwedge sleeve surrounding the nipple, a contracting sleeve surroundingthe wedge sleeve, contracting sleeve adjusting means engaged with saidsleeve and the nipple, the wedge sleeve terminating short of the innerend of the nipple, a clamp surrounding the inner end portion of thenipple and extending inwardly beyond the same, and means securing theclamp to the contracting sleeve.

2. A hose clamp comprising a nipple, a segmental wedge sleevesurrounding the nipple, a contracting sleeve surrounding the wedgesleeve, contracting sleeve adjusting means engaged with said sleeve andthe nipple, the wedge sleeve terminating short of the inner end of thenipple, a clamp consisting of three hinged sections surrounding theinner end portion of the nipple and extending inwardly beyond the same,means securing the clamp sections in closed relation, and means securingthe clamp to the contracting sleeve.

3. A hose clamp comprising a nipple, a segmental wedge sleevesurrounding the nipple, a contracting sleeve surrounding the wedgesleeve, contracting sleeve adjusting means engaged with said sleeve andthe nipple, the wedge sleeve terminating short of the inner end ofthenipple, a clamp surrounding the inner end portion of the nipple andextending inwardly beyond the same, and means securing the clamp to thecontracting sleeve, said means consisting of lugs carried by thecontractin g sleeve, lugs carried by the clamp, and bolts engaged withthe lugs.

In testimony whereof I hereunto aflix my signature.

JAMES R. FARR.

